CVE-2025-66614
CVE-2025-66614 · Apache Tomcat: Client certificate verification bypass due to virtual host mapping
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Improper Input Validation vulnerability. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0-M1 through 9.0.112. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Older EOL versions are not affected. Tomcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one of those hosts did not require client certificate authentication but another one did, it was possible for a client to bypass the client certificate authentication by sending different host names in the SNI extension and the HTTP host header field. The vulnerability only applies if client certificate authentication is only enforced at the Connector. It does not apply if client certificate authentication is enforced at the web application. Users are recommended to upgrade to version 11.0.15 or later, 10.1.50 or later or 9.0.113 or later, which fix the issue.
CVSS 7.6 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
apache tomcat
- Versions
- ≥ 11.0.0-M1, ≤ 11.0.14: Affected (semver)
- ≥ 10.1.0-M1, ≤ 10.1.49: Affected (semver)
- ≥ 9.0.0-M1, ≤ 9.0.112: Affected (semver)
- ≥ 8.5.0, ≤ 8.5.100: Affected (semver)
- ≥ 0, < 8.5.0: Not affected (semver)
No fix published
tomcat10 Debian:12
- Versions
- 10.1.10-1
- 10.1.13-1
- 10.1.14-1
- 10.1.15-1
- 10.1.16-1
- 10.1.20-1
- 10.1.23-1
- 10.1.25-1
- 10.1.25-1~bpo12+1
- 10.1.25-2
- 10.1.30-1
- 10.1.30-1~bpo12+1
- 10.1.31-1
- 10.1.33-1
- 10.1.33-1~bpo12+1
- 10.1.34-0+deb12u1
- 10.1.34-0+deb12u2
- 10.1.34-1
- 10.1.35-1
- 10.1.40-1
- 10.1.40-1~bpo12+1
- 10.1.46-1
- 10.1.6-1
- 10.1.6-1+deb12u1
- 10.1.6-1+deb12u2
- 10.1.7-1
- 10.1.8-1
- 10.1.9-1
- Affected ranges
- ECOSYSTEM: < 10.1.52-1~deb12u1
Update to 10.1.52-1~deb12u1
tomcat10 Debian:13
- Versions
- 10.1.40-1
- 10.1.46-1
- 10.1.52-1~deb12u1
- Affected ranges
- ECOSYSTEM: < 10.1.52-1~deb13u1
Update to 10.1.52-1~deb13u1
tomcat10 Debian:14
- Versions
- 10.1.40-1
- 10.1.46-1
- 10.1.52-1~deb12u1
- 10.1.52-1~deb13u1
- Affected ranges
- ECOSYSTEM: < 10.1.52-1
Update to 10.1.52-1
tomcat11 Debian:13
- Versions
- 11.0.11-1
- 11.0.6-1
- Affected ranges
- ECOSYSTEM: < 11.0.15-1~deb13u1
Update to 11.0.15-1~deb13u1
tomcat11 Debian:14
- Versions
- 11.0.11-1
- 11.0.15-1~deb13u1
- 11.0.6-1
- Affected ranges
- ECOSYSTEM: < 11.0.15-1
Update to 11.0.15-1
tomcat9 Debian:12
- Affected ranges
- ECOSYSTEM: < 9.0.70-2
Update to 9.0.70-2
tomcat9 Debian:13
- Affected ranges
- ECOSYSTEM: < 9.0.70-2
Update to 9.0.70-2
tomcat9 Debian:14
- Affected ranges
- ECOSYSTEM: < 9.0.70-2
Update to 9.0.70-2
tomcat8 Ubuntu:Pro:18.04:LTS
- Versions
- 8.5.21-1ubuntu1
- 8.5.29-1
- 8.5.30-1
- 8.5.30-1ubuntu1
- 8.5.30-1ubuntu1.2
- 8.5.30-1ubuntu1.3
- 8.5.30-1ubuntu1.4
- 8.5.39-1ubuntu1~18.04.1
- 8.5.39-1ubuntu1~18.04.2
- 8.5.39-1ubuntu1~18.04.3
- 8.5.39-1ubuntu1~18.04.3+esm1
- 8.5.39-1ubuntu1~18.04.3+esm2
- 8.5.39-1ubuntu1~18.04.3+esm3
- 8.5.39-1ubuntu1~18.04.3+esm4
- 8.5.39-1ubuntu1~18.04.3+esm5
- 8.5.39-1ubuntu1~18.04.3+esm6
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:Pro:18.04:LTS
- Versions
- 9.0.16-3~18.04.1
- 9.0.16-3ubuntu0.18.04.1
- 9.0.16-3ubuntu0.18.04.2
- 9.0.16-3ubuntu0.18.04.2+esm1
- 9.0.16-3ubuntu0.18.04.2+esm2
- 9.0.16-3ubuntu0.18.04.2+esm3
- 9.0.16-3ubuntu0.18.04.2+esm4
- 9.0.16-3ubuntu0.18.04.2+esm5
- 9.0.16-3ubuntu0.18.04.2+esm6
- 9.0.16-3ubuntu0.18.04.2+esm7
- 9.0.16-3ubuntu0.18.04.2+esm8
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:Pro:20.04:LTS
- Versions
- 9.0.24-1
- 9.0.27-1
- 9.0.31-1
- 9.0.31-1ubuntu0.1
- 9.0.31-1ubuntu0.2
- 9.0.31-1ubuntu0.3
- 9.0.31-1ubuntu0.4
- 9.0.31-1ubuntu0.5
- 9.0.31-1ubuntu0.6
- 9.0.31-1ubuntu0.7
- 9.0.31-1ubuntu0.8
- 9.0.31-1ubuntu0.9
- 9.0.31-1ubuntu0.9+esm1
- 9.0.31-1ubuntu0.9+esm2
- 9.0.31-1ubuntu0.9+esm3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:Pro:22.04:LTS
- Versions
- 9.0.43-3
- 9.0.54-1
- 9.0.55-1
- 9.0.58-1
- 9.0.58-1ubuntu0.1
- 9.0.58-1ubuntu0.1+esm1
- 9.0.58-1ubuntu0.1+esm2
- 9.0.58-1ubuntu0.1+esm3
- 9.0.58-1ubuntu0.1+esm4
- 9.0.58-1ubuntu0.2
- 9.0.58-1ubuntu0.2+esm1
- 9.0.58-1ubuntu0.2+esm2
- 9.0.58-1ubuntu0.2+esm3
- 9.0.58-1ubuntu0.2+esm4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat10 Ubuntu:24.04:LTS
- Versions
- 10.1.10-1
- 10.1.14-1
- 10.1.15-1
- 10.1.16-1
- 10.1.16-1ubuntu0.1~esm1
- 10.1.16-1ubuntu0.1~esm2
- 10.1.16-1ubuntu0.1~esm3
- 10.1.16-1ubuntu0.1~esm4
- 10.1.55-1ubuntu2~24.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:24.04:LTS
- Versions
- 9.0.70-1ubuntu1
- 9.0.70-2
- 9.0.70-2ubuntu0.1
- 9.0.70-2ubuntu0.1+esm1
- 9.0.70-2ubuntu0.1+esm2
- 9.0.70-2ubuntu0.1+esm3
- 9.0.118-1~24.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat10 Ubuntu:25.10
- Versions
- 10.1.35-1
- 10.1.40-1
- 10.1.40-1ubuntu1
- 10.1.40-1ubuntu1.25.10.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat11 Ubuntu:25.10
- Versions
- 11.0.6-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:25.10
- Versions
- 9.0.70-2ubuntu1.1
- 9.0.70-2ubuntu2
- 9.0.70-2ubuntu3
- 9.0.95-1ubuntu1
- 9.0.95-1ubuntu1.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat10 Ubuntu:26.04:LTS
- Versions
- 10.1.40-1ubuntu1
- 10.1.40-1ubuntu1.26.04.1
- 10.1.55-1ubuntu2~26.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published